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Dessert

Lemon Custard

A baked custard flavored with lemon zest, sugar, butter, milk, flour, and eggs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Lemon Custard

Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Lemon Custard

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Make the custard

  1. In a bowl, cream together the grated lemons, sugar, and softened butter.

  2. Add the milk and flour, mixing until smooth.

  3. Beat the egg yolks and add them to the mixture.

  4. In a separate bowl, beat the egg whites until stiff peaks form, then gently fold them into the mixture.

Bake

  1. Pour the mixture into a baking dish and bake at 350°F (175°C) until set.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Photo for illustrative purposes only · Contact us to use it

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  2. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  5. Lemon + milktop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

    Shared aroma: 2-nonenal (fatty, green).

Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Eggs
Yolks thicken the custard and whites, beaten and folded in, add lightness and structure.
Butter
Adds richness and a tender texture to the batter.
Flour
Thickens the mixture so it sets into a soft, sliceable custard.
Milk
Provides liquid that, with the eggs, sets into a creamy custard.
Sugar
Sweetens the dish and helps tenderize the creamed mixture.

The step that matters

Folding in the egg whites. Stiff whites hold air that gives lift; overmixing or stirring vigorously deflates them, leaving a dense, less airy result.

Swap the lemon

How well each one fits the dish's main ingredients (sugar, butter, milk, flour, egg):

  1. Vanillafits better
  2. Raisinfits better
  3. Figfits better
  4. Lemonthe original

Fit is the average pairing score against sugar, butter, milk, flour, egg. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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